1022864844 has 24 divisors (see below), whose sum is σ = 2388879360. Its totient is φ = 340641424.

The previous prime is 1022864827. The next prime is 1022864849. The reversal of 1022864844 is 4484682201.

It is a super-2 number, since 2×1022864844² = 2092504978182288672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1022864849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25404 + ... + 51875.

It is an arithmetic number, because the mean of its divisors is an integer number (99536640).

Almost surely, 2^1022864844 is an apocalyptic number.

It is an amenable number.

1022864844 is an abundant number, since it is smaller than the sum of its proper divisors (1366014516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1022864844 is a wasteful number, since it uses less digits than its factorization.

1022864844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78389 (or 78387 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 39.

The square root of 1022864844 is about 31982.2582692342. The cubic root of 1022864844 is about 1007.5642524808.

The spelling of 1022864844 in words is "one billion, twenty-two million, eight hundred sixty-four thousand, eight hundred forty-four".